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【单选题】
已知数列{a n }的通项公式是a n =n 2 +n，则a 4 等于（ ）A.
3
B.
9
C.
12
D.
20
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【单选题】Each local chapter of InfraGard will be run by the following EXCEPT ________.
A.
academic communities
B.
public agencies
C.
FBI
D.
private industry
【简答题】建设中国特色社会主义必须从实际出发, ( )是我国最大的实际。
【单选题】听力原文： Everywhere we look we see Americans running. They run for every reason anybody could think of. They run for health, for beauty, to lose weight, to feel fit and because- it's the thing they love ...
A.
It is the best known long distance race in the world
B.
It is the biggest Marathon race in the U. S.
C.
It was first held 50 years ago.
D.
It attracts nearly 5000 official competitors in recent years.
【简答题】我国药物的三大药源指的是 化学药物、中药和( )。
【简答题】我国药物的三大药源指的 是 、 和 。
【单选题】建设中国特色社会主义,必须从我国的实际出发,我国最大的实际是( )
A.
处于并将长期处于社会主义初级阶段
B.
人口多、资源相对不足
C.
人民的思想文化素质不够高
D.
商品经济不发达
【单选题】Train services are usually ________ and run regularly every day.
A.
reliable
B.
reasonable
C.
flexible
D.
comfortable
【单选题】______.is NOT run in the Summer Music School.
A.
Music History
B.
Chorus
C.
Elementary Guitar course
D.
Classic: Music
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